White blood cells travel through the blood and are a part of the cardiovascular system. Which other system also contains white blood cells? the integumentary system
the respiratory system
the immune system
the endocrine system

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.

The leopard frog and the pickerel frog are two closely related species. in areas where their ranges overlap, the frogs will remain separate species if they